Module type declarations
val mk : ?loc:loc ‑> ?attrs:attrs ‑> ?docs:Ppx_ast.Docstrings.docs ‑> ?text:Ppx_ast.Docstrings.text ‑> ?typ:Ppx_ast__.Import.Parsetree.module_type ‑> str ‑> Ppx_ast__.Import.Parsetree.module_type_declaration